Constituted 5 August 1917 in the National Army as the 305th
Ammunition Train and assigned to the 80th Division

Organized in September 1917 at Camp Lee, Virginia

Demobilized 9 June 1919 at Camp Dix, New Jersey

Reconstituted 28 October 1936 in the Organized Reserves; concurrently
consolidated with the 305th Ammunition Train (organized in December 1921 in
the
Organized Reserves with Headquarters at Washington, D.C.) and consolidated unit
designated as the 305th Ammunition Train, an element of the 80th Division

Converted and redesignated 12 February 1942 as the 905th Field
Artillery Battalion and remained assigned to the 80th Division (later redesignated
as the 80th
Infantry Division)

Ordered into active military service 15 July 1942 and reorganized
at Camp Forrest, Tennessee